The famous painting on which he spent so much time is now carefu

The famous painting on which he spent so much time is now carefully _____.
A、perceived
B、reserved
C、promoted
D、preserved
【正确答案】：D
【题目解析】：perceive感知；reserve保存；promote促进；preserve保存句意：他花了很多时间画的那幅名画现在被仔细地保存着。